Lithgow no.1 mk3

Last weekend I picked up a 1921 Lithgow enfield. Everything on this rifle is excellent, the only thing different on this that I have never seen before is the front band is brass. Has anyone seen this on a no.1 before?

Yes, I have seen this before. In fact I recently sold a No1 MkIII* that had the brass/copper front band. I don't believe it's a rare feature but that's just based on my experience and what I've seen over the years.